2010 5th International Symposium on Telecommunications最新文献_第3页

Intelligent cross-layer adaptation scheme for wireless links with QoS-guaranteed traffic 面向qos流量保证无线链路的智能跨层自适应方案

2010 5th International Symposium on Telecommunications Pub Date : 2010-12-01 DOI: 10.1109/ISTEL.2010.5734057

Younes Abdi, P. Azmi

引用次数: 5

Robust image watermarking based on multiwavelet parent-child relation and adaptive support vector regression 基于多小波父子关系和自适应支持向量回归的鲁棒图像水印

2010 5th International Symposium on Telecommunications Pub Date : 2010-12-01 DOI: 10.1109/ISTEL.2010.5734142

Hamed Ghodrati, H. Danyali

{"title":"Robust image watermarking based on multiwavelet parent-child relation and adaptive support vector regression","authors":"Hamed Ghodrati, H. Danyali","doi":"10.1109/ISTEL.2010.5734142","DOIUrl":"https://doi.org/10.1109/ISTEL.2010.5734142","url":null,"abstract":"In this paper, a robust image watermarking algorithm in multiwavelet domain is proposed. Multiwavelet transform provides good energy compaction and trade off between imperceptibility and watermark robustness properly. In the proposed algorithm, after performing a three-level multiwavelet decomposition, a parent-child relationship is defined between coefficients in different subbands. To increase the robustness, the relationship between the root node and its offspring nodes is learnt by support vector regression (SVR) and then the watermark is embedded and extracted based on this inherent relation. The good energy compaction property of multiwavelet can cause small number of coefficients containing most of image energy, therefore the range of target output values of SVR is extended which notably made inaccuracy in predictions. In order to overcome this problem, we proposed a procedure, which applies the inputs to SVR in an adaptive way. The experimental results show, the proposed algorithm possesses acceptable perceptual quality, while it is robust against common attacks such as JPEG, low-pass filtering, noise addition, cropping and resizing, etc.","PeriodicalId":306663,"journal":{"name":"2010 5th International Symposium on Telecommunications","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131820135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modification of the relative distance for free text keystroke authentication 修改相对距离为自由文本击键认证

2010 5th International Symposium on Telecommunications Pub Date : 2010-12-01 DOI: 10.1109/ISTEL.2010.5734085

H. Davoudi, E. Kabir

引用次数: 7

LayeredCast - a hybrid Peer-to-Peer live layered video streaming protocol LayeredCast -一个混合点对点直播分层视频流协议

2010 5th International Symposium on Telecommunications Pub Date : 2010-12-01 DOI: 10.1109/ISTEL.2010.5734106

M. Moshref, R. Motamedi, H. Rabiee, M. Khansari

{"title":"LayeredCast - a hybrid Peer-to-Peer live layered video streaming protocol","authors":"M. Moshref, R. Motamedi, H. Rabiee, M. Khansari","doi":"10.1109/ISTEL.2010.5734106","DOIUrl":"https://doi.org/10.1109/ISTEL.2010.5734106","url":null,"abstract":"Peer-to-Peer overlay networks are an attractive foundation for video streaming. However, live Peer-to-Peer media streaming systems face many challenges such as bandwidth heterogeneity, node churn, and selfish nodes. Although many tree based and mesh based streaming protocols have been proposed, each has its own drawbacks such as unreliability and unfairness in tree based and long startup delay and complex scheduling in mesh based protocols. In this paper, we propose a new video streaming protocol called LayeredCast main features of which are: 1) Hybrid: Drawbacks of the simple approaches are compensated using a hybrid of mesh and tree overlays. 2) Layered Video: Provides an adaptive scheme to enhance the video quality using a layered video codec for heterogeneous clients. 3) QoS: LayeredCast scheduling aims at moving complexity of Multi-Service network core to the network clients application layer, thus providing better QoS over simple regular networks. LayeredCast's tree network pushes the base layer to all peers while the enhancement layers and missing base layer segments are pulled over a mesh network by peers with extra bandwidth using a new data-driven scheduling scheme. We have evaluated the performance of LayeredCast on an innovative simulation framework. Simulation results verify better performance of LayeredCast in term of decodable video frames over CoolStreaming, especially when network resources are limited.","PeriodicalId":306663,"journal":{"name":"2010 5th International Symposium on Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131021277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Adaptive and quantitative comparison of J2EE vs. .NET based on attack surface metric 基于攻击面度量的J2EE与。net的自适应定量比较

2010 5th International Symposium on Telecommunications Pub Date : 2010-12-01 DOI: 10.1109/ISTEL.2010.5734024

S. Nasiri, R. Azmi, R. Khalaj

引用次数: 3

Performance analysis of opportunistic frequency diversity strategy in cognitive radio systems 认知无线电系统中机会频率分集策略的性能分析

2010 5th International Symposium on Telecommunications Pub Date : 2010-12-01 DOI: 10.1109/ISTEL.2010.5733989

M. Ghaznavi, A. Jamshidi

引用次数: 0

Object detection with novel shape representation using bounding edge fragments 基于边界碎片的新型形状表示的目标检测

2010 5th International Symposium on Telecommunications Pub Date : 2010-12-01 DOI: 10.1109/ISTEL.2010.5734140

Mohammad Anvaripour, H. Ebrahimnezhad

引用次数: 2

Ontology-based fuzzy web services clustering 基于本体的模糊web服务聚类

2010 5th International Symposium on Telecommunications Pub Date : 2010-12-01 DOI: 10.1109/ISTEL.2010.5734117

N. Gholamzadeh, F. Taghiyareh

引用次数: 14

Distributed power allocation based on coalitional and noncooperative games for wireless networks 基于联合与非合作博弈的无线网络分布式功率分配

2010 5th International Symposium on Telecommunications Pub Date : 2010-12-01 DOI: 10.1109/ISTEL.2010.5734054

H. Khayatian, R. Saadat, G. Mirjalily

引用次数: 8

Robust facial 2D motion model estimation for 3D head pose extraction and automatic camera mouse implementation 鲁棒面部二维运动模型估计三维头部姿态提取和自动相机鼠标实现

2010 5th International Symposium on Telecommunications Pub Date : 2010-12-01 DOI: 10.1109/ISTEL.2010.5734135

Masoomeh Nabati, A. Behrad

{"title":"Robust facial 2D motion model estimation for 3D head pose extraction and automatic camera mouse implementation","authors":"Masoomeh Nabati, A. Behrad","doi":"10.1109/ISTEL.2010.5734135","DOIUrl":"https://doi.org/10.1109/ISTEL.2010.5734135","url":null,"abstract":"In this paper, we present a novel approach to 3D head pose estimation from monocular camera images for the control of mouse pointer movements on the screen and clicking events. This work is motivated by the goal of providing a non-contact instrument to control the mouse pointer on a PC system for handicapped people with severe disabilities using low-cost and widely available hardware. The required information is derived from video data captured using a monocular web camera mounted on the computer monitor. Our approach proceeds in six stages. First, the face area is extracted using Haar-like features and AdaBoost algorithm. Second, the locations of the point features are detected and tracked over video frames by LK algorithm. Third, the 2D transformation model between consecutive frames is estimated by matching features and robust RANSAC algorithm. Fourth, the estimated 2D transformation model is applied to four supposed points on the face area. Then, the 3D rotation matrix and translation vector between the web camera and 3D head pose are estimated using four points correspondences. Finally, the 3D rotation and translation matrix is applied for estimating the mouse pointer movements on the PC screen and clicking events. Experimental results showed the promise of the algorithm.","PeriodicalId":306663,"journal":{"name":"2010 5th International Symposium on Telecommunications","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124326297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3